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1987～1989年,从辽宁省玉米茎腐病主要发生区采集典型病株,自茎基髓部取样以组织分离法分离纯化,并作病原菌鉴定和致病性测定。结果表明,以瓜果腐霉菌[Pythium aphanidermatum(Eds.)Fitzp.]和禾谷镰刀菌[Fuarium graminearum Schw.]分离频率较高,致病力也较强。两种菌混合接种未见有加重发病的趋势。串珠镰刀菌[F.moniliforme Sheld.]和木贼镰刀菌[F.equisetic(Cda.)Sacc.],也表现一定致病力,但分离频率不高。初步认为瓜果腐霉菌和禾谷镰刀菌是引起辽宁省玉米茎腐病的主要致病菌。
From 1987 to 1989, typical diseased plants were collected from the main areas of corn stalk rot in Liaoning Province. Samples were collected from the stem and stem of the plant for isolation and purification by tissue separation, and the pathogenic bacteria were identified and pathogenic. The results showed that Pythium aphanidermatum (Eds.) Fitzp. And Fusarium graminearum Schw. Had higher frequency and stronger virulence. Mixed with two kinds of bacteria have not seen any increase in the incidence of the trend. F. moniliforme Sheld. And F. histocarpa [F.equisetic (Cda.) Sacc.] Also showed some pathogenicity, but the frequency of isolation was not high. It is preliminarily believed that the fruits of Pythium meliloti and Fusarium graminearum are the main pathogenic bacteria causing corn stalk rot in Liaoning Province.